Auxiliary gas generating means for oil burners



Jan. 3, 1933. FALKENWALDE 1,893,403

AUXILIARY GAS GENERATING MEANS FOR OIL BURNERS Filed May 9, 1929 I: Sheets-Sheet 1 'III'IIIIIIIIIIIIIIIIIIII lwumtox Jan. 3, 1933. I o, FALKENWALDE 1,893,403

AUXILIARY GAS GENERATING MEANS FOR OIL BURNERS Filed May 9, 1929 3 Sheets-Sheet 2 glwuemtoz 0 FaZ/remmldz Jan. 3, 1933. O.'FALKENWALDE "AUXILIARY GAS GENERATING MEANS FOR OIL BURNERS Filed May 9, 1929 5 Sheets-Sheet 3 gwuentoz I 0- FaZ/femmie? Patented Jan. 3, 1933 V UNITED STATES PATENT o Frc oscen A K NWALDE, or BALTIMQRE, MARYLAND, ASSIGNOR or ONE-HALE r BQBEBT E- LYQN, 9Z5 BALTIMORE, MARYLAND AUXILIARY ens N TIN MEANS For, OIL Bum'vnas Application filed may 9, 1929. SeriaI No. 361,787.

' This invention relates to a device for evaporating water and supplying the productsto a fuel oil burner for admixture with the fuel,

and is primarily used in connection with afuel oil burner such as is disclosed-in the pending application of Oscar Falkenwalde and Robert H. Lyon, Serial No. 251,32Q, filed February 2, 1928 and in the application to the same parties filed of even date herewith.

It-is particularly aimed to provide a novel construction including'a mixer which 1s supported on the fuel nozzle and in turn supports the'parts used in the treatment ofthe water. i

It is also aimed to provide a novel construction wherein relative movement may occur between the mixer and parts mentioned in the event of excessive pressure in order to relieve the device thereof. I

A further object is to provide a novel construction wherein the spreader for the prod,- ucts from the evaporation of water is mounted in anovel manner. 7 V

A further object is to provide a novel con- 25 struction providing awater trap and novel means for'the evaporation of the water and passageof the products to the spreader.

Additional objects and advantages will become apparent from a consideration of the description following taken in connection with accompanying drawings illustrating an operative embodiment.

In said drawings Figure 1 is a View illustratingthe parts constituting my invention in place in a conventional oil burner, the latter being shown in central vertical section,

Figure 2 is a plan view of thedevice,

40 Figure 3 is a central vertical section through the device, 7 g

Figure 4 is across sectional view taken on the line .44 of Figure 3,

Figure 5 is an inverted'plan view of th V mixer alone,

having the desired number of supporting feet 11 fastened thereto. At the lower or outer end of the air chute, an electric or other type of forced draft blower generally designated 12 is :disposedin order to force the air into the chute 10 and discharge it at the upper end which is flared as atl3. A base plate 14 removably rests on the upper surface of the flared portion '13 and has an integral retaining flange 15 depending therefrom and surrounding said flared portion. Base plate ll'is preferably a'casting and has a hub 16 through which a fuel pipe 17 removably passes. -Said fuel pipe extends above the hub 16 and a conical nozzle 18 is removably screw threaded thereto at 19, packing of asbestos as at 20 preferably being interposed between the top of the hub 16 and adjacent faces of the nozzle 18. The nozzle has an outlet opening 21 in line with the bore of the pipe 17 g r 1 r j Removably disposed on the'base plate I l, is a crown plate 26. Ports 25 are provided in the plate 14 and the plate 26 is-spaced from the plate 14, accommodating vanes 30, serving to impart a whirling motion to the air before it reaches the nozzle 18,and specifically' as disclosedin said pending application 251,320; l

' Surrounding nozzle 1-8 is a mixing shell 34. Shell 34: as inthe application filed of even date herewith receives air under pressure and in whirling motion at its lower end and has I a plurality. of vanes 85 located within the same whose inner edges are-reverselyinclined at 36 and 37, respectively. The edges 36 contactwiththe nozzle 18 and the shell isthereby '0 V removably supported on such nozzle. The vanes 35 are also inclined to the vertical so that fuel emerging from the nozzle will strike the same and have a whirling motion accordingly imparted thereto. As will later be described, the products from the evaporation of moisture will likewise strike the vanes 35 and have a whirling motion imparted thereto. As a result, fuel and said products will all be in whirling motion when they admix at the burner and are ignited by the flame therefrom, and the flame will also be given a whirling and expanding motion. .7.

A steam generator is provided at 40 and its purpose is to supply the fuelmixture at the nozzle 18 with steam to insure complete combustion of the fuel. This device comprises a conical spreader 41 arranged in an upright positionwithin the mixing shell 34 engaging the inclined edges 37 of vanes 35. A supply. tube 42 is'fastened to the spreader 41 and extends removably and slidably through an opening 43 in a hood 44 which is removably seated at 45 on the mixer 34,closing the latter from above but being capable of yielding from said seat 45 in case of excessive pressure to relieve the device thereof. A washer 46 loosely surrounds tube 42 and bears against the adjacent surface of the hood 44 and below the. same, asbestos packing 47 surrounds the tube. Below packing 47, a deflector 48 loosely surrounds the tube, at its lower end overlapping the deflector 41 and being flared outwardly therefrom and from openings 49 through the same which communicate by means of openings 50 with the interior of the tube 42. Asbestos packing 52 surrounds the tube 42- between the spreader 41 and adjacent wall of the deflector 48.

V The generator 40 further comprises a vertical cylinder 53 and horizontal cylinders 54 radiate from the former and communicate therewith at the inner ends, the outer ends being closed by caps 55. A bushing 56 rests on the hood 44 and has screw threaded engagement at 57 with the cylinder 53. A tube 58 at its lower'endis screw threaded into the bushing and at its upper end is covered by a cap 59 screw threaded thereto. Below the cap the tube 58 has inlet ports 60 and within the tube is a tube of smaller diameter 61 open atthe top and carried by the tube 42. Water is supplied preferably drop by drop through a pipe 62 fastened to the cylinder 53. Such pipe 62 corresponds to the pipe 48 in our aforesaid pending application #251,320 and is arranged in communication with the same mechanism for the supply of water as in said application. The lower part of the cylinder 53 about the tube 58 constitutes a water trapr53, v

Within a short time after the starting of the burner all parts thereof are heated to a cherry red with the result that the oil issuing fromthe nozzle is vaporized and the water supplied through pipe 62 upon striking cap 59 is converted into steam. As previously outlined, such oil and steam are in whirling motion when they admix and ignite at the burner and the same whirling motion is imparted to the flame.

Various changes may be resorted to provided they fall within the spirit and scope of the invention.

I claim as my invention I l. A device of the class described comprising a mixer having means whereby fuel is supplied to the mixer, a hood seated on the mixer, a tube extending through the hood, a spreadercarriedby the tube and extending into the mixer, and means supported and discharge the-same through'the tube onto the spreader, said tube-beingslidably mounted in the hood, and a deflector on the tube surrounding the outlet in the spreader.

3. A device of the class described having a body adapted to receive water, a supporting bushing screw threaded thereto, an outlet tube threaded to saidbushing, said tube having an outlet port above the base of the body whereby products of the evaporation of water may pass therethrougl1,'a cap screw threaded to said tube and arranged in the path of'entrance of the water, anoutlet tube for the products disposed within the first mentioned tube, and a hood on which said bushing rests, said tube passing loosely into the hood. 7 Y

v 4. A device of the class described having a body adapted to receive water, a supporting bushing screw threaded thereto, an outlet tube threaded to said bushing, said tube having an outlet portabove the base of the bodywhereby products of the evaporation'of water may pass therethrough, a cap screw threaded to said tube'and arranged in'the path of entrance of the water, an outlet tube for the products disposed within the first mentioned tube, a hood on which said bushing rests, said tube passing loosely into thehood, a mixer on which the hood seats, packing meanssurrounding the tube or the opening iii-the hood through which the tube passes, a spreader on said tube extending into the mixer, said tube and spreader having outlet openings, and a deflector surrounding the tube and disposed about said'openings.

5. A device of the class describedicomprising a vertical mixer having longitudinally and inwardly extending mixing vanes therein, said vanes comprising upper and lower portions havin inner edges diverging from the junction 0 the portions toward the uppeer and lower ends of the vanes, a fuel nozzle on which said lower portions seat, a spreader seated on the said upper portion of said edges against which fuel is supplied by said nozzle, and means to evaporate water and discharge the steam against the spreader for admixture with the discharge fuel.

In testimony whereof I affix my signature.

OSCAR FALKENWALDE. 

